A man mountain-biking alone in Brown County State Park was found dead on a bike trail today.

A passer-by on the trail found Phillip Hunter, 58, Indianapolis, at 12:30 p.m. and called 911.

Indiana conservation officers report the man was biking on trail B in the park, near the North Lookout Tower, and had spoken with other riders just before those same people found him unresponsive on the trail.

He was pronounced dead at the scene.

Brown County Coroner Rob Ayers said Hunter likely died of a heart attack.

Conservation officers, in a news release, said no foul play is suspected.